// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_VIEWS_CONTROLS_MENU_MENU_HOST_ROOT_VIEW_H_
#define UI_VIEWS_CONTROLS_MENU_MENU_HOST_ROOT_VIEW_H_

#include "base/macros.h"
#include "ui/views/widget/root_view.h"

namespace views {

class MenuController;
class SubmenuView;

// MenuHostRootView is the RootView of the window showing the menu.
// SubmenuView's scroll view is added as a child of MenuHostRootView.
// MenuHostRootView forwards relevant events to the MenuController.
//
// As all the menu items are owned by the root menu item, care must be taken
// such that when MenuHostRootView is deleted it doesn't delete the menu items.
class MenuHostRootView : public internal::RootView {
public:
    MenuHostRootView(Widget* widget, SubmenuView* submenu);

    void ClearSubmenu() { submenu_ = NULL; }

    // Overridden from View:
    bool OnMousePressed(const ui::MouseEvent& event) override;
    bool OnMouseDragged(const ui::MouseEvent& event) override;
    void OnMouseReleased(const ui::MouseEvent& event) override;
    void OnMouseMoved(const ui::MouseEvent& event) override;
    bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
    View* GetTooltipHandlerForPoint(const gfx::Point& point) override;
    void ViewHierarchyChanged(const ViewHierarchyChangedDetails& details)
        override;

    bool ProcessMousePressed(const ui::MouseEvent& event);
    bool ProcessMouseDragged(const ui::MouseEvent& event);
    void ProcessMouseReleased(const ui::MouseEvent& event);
    void ProcessMouseMoved(const ui::MouseEvent& event);
    View* ProcessGetTooltipHandlerForPoint(const gfx::Point& point);

private:
    // ui::EventProcessor:
    void OnEventProcessingFinished(ui::Event* event) override;

    // Returns the MenuController for this MenuHostRootView.
    MenuController* GetMenuController();

    // The SubmenuView we contain.
    SubmenuView* submenu_;

    DISALLOW_COPY_AND_ASSIGN(MenuHostRootView);
};

} // namespace views

#endif // UI_VIEWS_CONTROLS_MENU_MENU_HOST_ROOT_VIEW_H_
